You can enjoy those fast-paced action games on your computer with a game controller, but if you also want more precise shoots, the following PC game controller with trackball should be able to draw your more attention.
This is an innovative, useful game controller designed by Peter Von Buskirk. As we can see from the images, unlike a standard gamepad with two joysticks, the computer game controller features an integrated trackball in order that you can precisely control your shoots via slightly rolling the trackball for many fast-paced FPS games such as Call of Duty series, Team Fortress 2 and more. Moreover, the game controller also comes with a joystick, a D-pad, 4 main fire buttons and 4 shoulder buttons. Apart from that, the game controller connects with computer via USB cable.
At present, the designer of the gamepad is raiding fund on Kickstarter. Pledge $22 will let you own the game controller with trackball. If you’re interested, jump to Kickstarter official site for more details.